On Tue, Feb 27, 2018 at 03:08:58PM +0100, Stephan Müller wrote: > Am Freitag, 23. Februar 2018, 13:00:26 CET schrieb Herbert Xu: > > Hi Herbert, > > > On Fri, Feb 23, 2018 at 09:33:33AM +0100, Stephan Müller wrote: > > > A simple copy operation, however, will imply that in one AIO recvmsg > > > request, only *one* IOCB can be set and processed. > > > > Sure, but the recvmsg will return as soon as the crypto API encrypt > > or decrypt function returns. It's still fully async. It's just > > that the setup part needs to be done with sendmsg/recvmsg. > > Wouldn't a copy of the ctx->iv into a per-request buffer change the behavoir > of the AF_ALG interface significantly? > > Today, if multiple IOCBs are submitted, most cipher implementations would > serialize the requests (e.g. all implementations that behave synchronous in > nature like all software implementations). No there is no such guarantee. In fact I'm pretty sure such users would be totally broken if cryptd was used. Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
